CN108181255A - A kind of film microphony multicomponent Modular gas analytical equipment - Google Patents
A kind of film microphony multicomponent Modular gas analytical equipment Download PDFInfo
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- CN108181255A CN108181255A CN201711407919.2A CN201711407919A CN108181255A CN 108181255 A CN108181255 A CN 108181255A CN 201711407919 A CN201711407919 A CN 201711407919A CN 108181255 A CN108181255 A CN 108181255A
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- 238000004458 analytical method Methods 0.000 claims abstract description 56
- 238000004868 gas analysis Methods 0.000 claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims description 128
- 239000007789 gas Substances 0.000 claims description 82
- 239000010408 film Substances 0.000 claims description 61
- 239000013307 optical fiber Substances 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 230000013011 mating Effects 0.000 claims description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000009422 external insulation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000004056 waste incineration Methods 0.000 abstract description 3
- 238000001311 chemical methods and process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004452 microanalysis Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/74—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The embodiment of the invention discloses a kind of film microphony multicomponent Modular gas analytical equipment, including：The double light source double light path two-component infrared analysis modules of film microphony, four component infrared analysis module of film microphony single light source monochromatic light road, electrochemical gas analysis module, heat-conducted gas analysis module, magnetic mechanical gas analysis module.Apparatus structure of the embodiment of the present invention is compact, cost performance is excellent, especially stability is good, strong antijamming capability, influenced by ambient temperature small, it can be neatly according to application scenario and the demand selecting module of user, arbitrarily combined, it ensure that instrument is monitored in chemical-process, the different extensive uses for measuring occasion such as Industrial Boiler exhausting control, waste incineration control, biochemical gas analysis.
Description
Technical field
The present embodiments relate to gas analysis technology fields, and in particular to a kind of film microphony multicomponent Modular gas
Analytical equipment, the device can analyze the gas concentration of multiple components simultaneously, suitable for fields such as industry, environmental protection and scientific researches.
Background technology
Infrared ray is one section in electromagnetic spectrum, between visible region and microwave region, because it is red in visible spectrum
Except optic terminus, so infrared ray of gaining the name.The thermal power of infrared band is maximum in entire electromagnetic spectrum, and infra-red radiation is mainly
Heat radiation.In infrared gas analyzer, the wave-length coverage used is usually within 1~16 μm.
Infrared ray is made to pass through the tested gas in certain length container, gas with various is recycled to have to corresponding infrared
The absorption characteristic of spectrum, which is realized, to be measured, and is then measured through the infrared radiation densities I after gas.This absorption characteristic follows instead
Lambert-Beer's law (Lambert-Bill Law) of the substance to spectral absorption rule is reflected, which is expressed as：I=I0e-KCL。
Wherein I0For initial light energy, I is the light energy received after absorption, and L is the length that light beam passes through medium, and K is specific substance
To the absorption coefficient of spectrum, and C is then the concentration of ingredient to be detected, that is, C=ln (I0/I)/KL。
Infrared absorption spectrum characteristic based on gas, there is divide in middle infrared band for the polar gas molecule of non-single element
The fundamental frequency absorption line of sub- vibration level, therefore infrared gas analyzing apparatus can measure that multiple gases, measurement range be wide, sensitivity
Height, high certainty of measurement, reaction is fast, has the advantages that good selectivity, can carry out macro-analysis and carry out micro-analysis,
And it is used suitable for online.
Infrared ray gas analysis apparatus is made of transmitter and measuring circuit two large divisions, transmitter again by optical system and
Detector two parts form.Optical system main composition part has：Infra red radiation light source, reflector cut electro-optical device, gas chamber and filter
Optical element etc..There are mainly four types of the detector that is used in infrared ray gas analysis apparatus is current:Thin-film capacitor detector, micrometeor
Detector, photoconductive detector and pyroelectric detector.It, can be by above-mentioned four kinds detections according to the difference in structure and operation principle
Device is divided into two classes, and wherein first two detector belongs to pneumatic detector, and latter two detector belongs to solid-state detector.And pneumatic inspection
Survey device detection limit and stability, hence it is evident that better than solid-state detector.
Thin-film capacitor detector is also known as film microphony detector, by metal foil diaphragm and determines pole and forms capacitor, works as reception
When indoor gas pressure is influenced by infrared energy and changed, capacitance movable plate is pushed to be moved relative to stator, tested component
Concentration change transitions are into electric capacitance change.Existing film microphony infrared ray gas analysis apparatus is essentially all to realize single group
The measurement divided, when needing to analyze multiple components, must just use multiple devices.
During the embodiment of the present invention is realized, inventor has found existing film microphony multicomponent Modular gas point
When analysis apparatus needs to analyze multiple components, it is necessary to use multiple sub-devices so that the sub-device quantity in analysis system is excessive, and
It is complicated, cause the waste of resource and the energy.
Invention content
The embodiment of the present invention proposes a kind of film microphony multicomponent Modular gas analytical equipment.
In order to realize the present invention, embodiment proposes a kind of film microphony multicomponent Modular gas analytical equipment, including：It is thin
The double light source double light path two-component infrared analysis modules of film microphony, four component infrared analysis mould of film microphony single light source monochromatic light road
Block, electrochemical gas analysis module, heat-conducted gas analysis module and magnetic mechanical gas analysis module；
The gas nozzle of the infrared gas analysis module and the electrochemical gas analysis module (or a heat-conducted analysis mould
Block or a magnetic mechanical analysis module) gas nozzle between, be connected by the gas circuit pipe of internal diameter 3mm or 6mm；
1 infrared gas analysis module and 1 electric chemical formula analysis module (or one can be installed simultaneously in the analytical equipment
Heat-conducted analysis module or a magnetic mechanical analysis module)；
In the analytical equipment also can the double light source double light path two-component infrared analysis modules of independently installed film microphony,
An or four component infrared analysis module of film microphony single light source monochromatic light road.
The double light source double light path two-component infrared analysis modules of the film microphony include an infrared light supply generating means,
Two gas chambers and two film microphony detectors；
The infrared light supply generating means includes：Upper shell, motor, upper magnetic support, cuts mating plate, lower magnetic support and light at lower housing
Source reflector；
The upper shell is connect with lower housing；
The upper magnetic support is set on the lateral wall of the upper shell；
The lower magnetic support corresponds to the upper magnetic support setting, and between the upper shell and lower housing；
The mating plate of cutting is set on the lower magnetic support；
The motor drives the upper magnetic support to be rotated around the axis of the motor；
The light source reflector is set on the upper shell, including：Reflector, housing and filament component；
The case cover is set on outside the reflector；
The filament component is set to across the reflector in the housing；
The through-hole is set corresponding to the filament component；
Using two light source reflectors in the infrared light supply generating means, each reflector respectively with a gas chamber and one
A film microphony detector connection, can not be by the monitoring two-component gas concentration that range is limited.
On the basis of said program preferably, the four component infrared analysis module packet of film microphony single light source monochromatic light road
Include an infrared light supply generating means, a gas chamber, an optical filter and a film microphony detector, an infrared light supply hair
One of light source reflector is used only in generating apparatus.By the switching of optical filter in the optical filter, make the film microphony
Detector can measure the component of gas in each gas chamber；
The detector is connect with the optical filter；
Between the optical filter setting and single gas chamber and detector, by the switching of optical filter in the optical filter, make
The detector can measure the component of gas in each gas chamber.
The optical filter includes switching device of optical fiber；
The switching device of optical fiber includes：Lid, housing, stepper motor, filter set, optical filter, cambered plate, absorption
Box, glass sock and Hall element group；
The lid is connect with housing；
The filter set is connect with the stepper motor；
The optical filter is movably arranged in the filter set, according to the component of tested gas, determines that target optical filter is consolidated
Due in the filter set；
The stepper motor, the cambered plate, the absorption cell and the Hall element group are fixed at the housing
Inside；
The glass sock is fixed in the outside of the housing；
Wherein, the motor drives the filter set to do axial-movement around the motor.
The filter set includes：Annular slab, coupling sleeve and magnet；
The coupling sleeve and the magnet are set on the annular slab.
The Hall element group includes：Hall element and fixed plate；
The Hall element is bonded in the fixed plate.
Described device further includes：Motor drive module；
The motor drive module is connect with the motor, for being given birth to according to the switching frequency of the switching device of optical fiber
Sampling plate is sent into pulse signal, and by the pulse signal.
Described device further includes：Stepper motor drive module；
The stepper motor drive module runs for Driving Stepping Motor, to drive the switching of the optical filter.
On the basis of said program preferably, described device further includes：Electric chemical formula analysis module；
The electric chemical formula analysis module includes：First base and electrochemical sensor；
On the basis of said program preferably, described device further includes：Heat-conducted analysis module；
The heat-conducted analysis module includes：Second base, conductance cell and external insulation cover.
On the basis of said program preferably, described device further includes：Magnetic mechanical analysis module；
The magnetic mechanical gas analysis module includes：Third pedestal, magnetic machinery module and external insulation cover.
As shown from the above technical solution, apparatus structure of the embodiment of the present invention is compact, cost performance is excellent, especially stability
It is good, strong antijamming capability, influenced by ambient temperature small, can mould arbitrarily neatly be selected according to the demand of application scenario and user
Block is arbitrarily combined, and ensure that instrument is monitored in chemical-process, Industrial Boiler exhausting control, and waste incineration control is biochemical
The different extensive uses for measuring occasion such as gas analysis.
The present invention also provides the control methods of the optical filter, and the method comprising the steps of：
S601, controller after the power is turned on, allow optical filter to be rotated clockwise from light source direction first, go to initial position stopping.
The initial position of optical filter is the position of Hall element and magnet consistency from top to bottom, and stepper motor rotates N1 step pitch from initial position
Angle reaches first optical filter position, needs to rotate N1+N2 step angle from initial position to the position of second optical filter,
Or rotate N2 step angle from the position of first optical filter；
S602 initializes stepper motor, continuously transmits pulse signal to stepper motor, stepper motor is allowed to rotate, Zhi Daojian
When measuring the output signal of Hall element has high level to low transition, stop sending pulse signal, stepper motor is allowed to stop
This position of optical filter, is defined as starting point by rotation, this is initialization n=0；
S603 continuously transmits pulse, and one pulse n of hair adds 1, until detecting that hall signal has high level to low electricity again
During flat saltus step, stop sending pulse signal；
The value of n is assigned to N, calculates N1, N2, N3, N4, N2=N3=N4=N/4, N1=N2/2 (rounding) by s604；
Next s605 rotates optical filter according to component number to be measured and component.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these figures.
Fig. 1 is the structure diagram of film microphony multicomponent Modular gas analytical equipment that one embodiment of the invention provides；
Fig. 2 is the knot of the double light source double light path two-component infrared analysis modules of film microphony that one embodiment of the invention provides
Structure schematic diagram；
Fig. 3 is the hardware architecture diagram of switching device of optical fiber that one embodiment of the invention provides；
Fig. 4 is the structure diagram when switching device of optical fiber that one embodiment of the invention provides is not provided with filter set；
Fig. 5 is the structure diagram when switching device of optical fiber that one embodiment of the invention provides sets filter set；
Fig. 6 is the general assembly structure diagram of switching device of optical fiber that one embodiment of the invention provides；
Fig. 7 is the structure diagram of filter set that one embodiment of the invention provides；
Fig. 8 is the structural representation of film microphony multicomponent Modular gas analytical equipment that another embodiment of the present invention provides
Figure；
Fig. 9 is the general assembly distribution structure of film microphony multicomponent Modular gas analytical equipment that one embodiment of the invention provides
Schematic diagram；
The optical filter drive software flow chart that Figure 10 one embodiment of the invention provides.
Wherein, 201：Housing；202：Glass sock；203：Motor；204：Hall element group；205：Drying box；206：Arch
Plate；207：Filter set；208：Optical filter；209：First jackscrew；210：Fixed block；211：Second jackscrew；212：Lid；213：O
Type circle；214：Pin；215：Cooling fin；216：Power switch；217：Gas circuit outlet；218：Gas circuit air inlet；219：Bottom plate afterwards；
220：Four component infrared gas analysis module of film microphony single light source monochromatic light road；221：Noseplate；222：Handle；223：Flow
Meter；224：Touch screen；225：Front panel；226：Electric plates；2071：Annular slab；2072：Coupling sleeve；2073：Magnet.
Wherein 208：Optical filter includes the optical filtering of optical filter 1, optical filter 2, optical filter 3, the different plated films of 4 four kinds of optical filter
Piece.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is further described.Following embodiment is only used for more
Technical scheme of the present invention is clearly demonstrated, and is not intended to limit the protection scope of the present invention and limits the scope of the invention.
Fig. 1-3 shows the structure diagram of film microphony multicomponent Modular gas analytical equipment provided in this embodiment,
Including：The double light source double light path two-component infrared analysis modules 11 of film microphony, four components of film microphony single light source monochromatic light road are red
Outside line analysis module 12, electrochemical gas analysis module 13, heat-conducted gas analysis module 14 and magnetic mechanical gas point
Analyse module 15；
The double light source double light path two-component infrared analysis modules 11 of the film microphony are filled comprising an infrared light supply
It puts, two gas chambers and two film microphony detectors, two infrared light supply reflectors is used in an infrared light supply generating means；
The three component infrared analysis module 12 of film microphony single light source monochromatic light road is filled including an infrared light supply
It puts, a gas chamber, an optical filter and a film microphony detector, wherein one is used only in an infrared light supply generating means
A infrared light supply reflector by the switching of optical filter in the optical filter, enables the film microphony detector to measure respectively
The component of gas in gas chamber；
The electrochemical gas analysis module 13 includes pedestal and electrochemical sensor for analyzing the dense of oxygen gas
Degree；
The heat-conducted gas analysis module 14 includes pedestal, conductance cell and conductance cell external insulation cover, for analyzing hydrogen
The concentration of gas gas；
The magnetic mechanical gas analysis module 15 includes pedestal, magnetic machinery module and external insulation cover, for essence
The really concentration of analysis oxygen gas.
The film microphony detector includes series connection type thin film micro-phonic condensator type detector, the tandem-type thin film microphony
Capacitor-type detector include housing, connector sleeve, the detection chamber component for being connect with connector sleeve and being set in enclosure interior, positioned at shell
The signal terminal of body bottom and the vacuum manifold mounted on housing sidewall；The detection chamber component includes two housings；The company
Female connector includes the flange for external connection, the optical filter being installed in connector sleeve, the optics balance for being installed on optical filter side
Hole, the annular seal groove of connector sleeve lower part and ring packing notch.
The infrared light supply generating means includes：Upper shell, motor, upper magnetic support, cuts mating plate, lower magnetic support and anti-at lower housing
Emitter；The upper shell is connect with lower housing, and the upper magnetic support is set on the lateral wall of the upper shell；The lower magnetic support pair
Upper magnetic support setting described in Ying Yu, and between the upper shell and lower housing；The mating plate of cutting is set on the lower magnetic support.
From the point of view of hardware, the four component infrared gas analyzing apparatus of film microphony single light source monochromatic light road includes detector
101st, (the filter comprising optical filter 1, optical filter 2, optical filter 3, the different plated films of 4 four kinds of optical filter wherein in optical filter of optical filter 102
Mating plate) and a gas chamber 103.
The detector 101 is connect with the optical filter 102；
The optical filter 102 be set between detector 101 and gas chamber, by optical filter in the optical filter (optical filter 1,
The optical filter of the different plated films of optical filter 2, optical filter 3,4 four kinds of optical filter) switching, the detector is enable to measure each gas chamber
The component of middle gas.
The present embodiment changes 101 inflation formula of detector by adding optical filter 102 between detector 101 and gas chamber
The switching of optical filter with 4 four kinds of optical filter 1 in optical filter 102, optical filter 2, optical filter 3, optical filter different plated films makes film
Microphony multicomponent Modular gas analytical equipment can realize the measurement of most four infrared components；It needs to fill into detector 101
Enter component sample gas to be detected, specific proportioning needs to complete by calculating or many experiments, and used inflation formula needs
It is easy to produce under the premise of ensureing sensitivity；Simultaneously by by each circuit board module, facilitate the independent upgrading of modules with
And fault diagnosis and after-sales service.
The present embodiment apparatus structure is compact, cost performance is excellent, especially stability is good, strong antijamming capability, by environment temperature
Degree influence it is small, can neatly being optionally combined according to the arbitrary range of demand of application scenario and user, ensure that instrument in work
Industry boiler emission monitors, waste incineration control, the different extensive uses for measuring occasion such as biochemical gas analysis.
The modular Multi-component infrared gas analyzing apparatus of the present invention, can analyze multiple gases component simultaneously, real
An existing device measures the concentration of multiple gas components simultaneously.Apparatus structure is compact, reliability is high, especially high sensitivity, steady
Qualitative good, strong antijamming capability, the influence of environment temperature.It is suitble to the process industry of sample gas and bad environments and environmental protection such as, section
The fields of grade are ground to use online.
Further, on the basis of above device embodiment, the optical filter 102 includes switching device of optical fiber；
As illustrated in figures 4-5, the switching device of optical fiber includes：Lid 212, housing 201, stepper motor 203, filter set
207th, optical filter 208 (optical filter for including optical filter 1, optical filter 2, optical filter 3, the different plated films of 4 four kinds of optical filter), cambered plate
206th, absorption cell, glass sock 202 and Hall element group 204；
The lid is connect with housing 201；
(the optical filtering comprising optical filter 1, optical filter 2, optical filter 3, the different plated films of 4 four kinds of optical filter of filter set 208
Piece) it is connect with the stepper motor 203；
(the optical filtering comprising optical filter 1, optical filter 2, optical filter 3, the different plated films of 4 four kinds of optical filter of optical filter 208
Piece) it is movably arranged in the filter set 207, according to the component of tested gas, determine objectives optical filter (optical filter 1, filter
The use of the optical filter of the different plated films of mating plate 2, optical filter 3,4 four kinds of optical filter) it is fixed in the filter set 207；
The stepper motor 203, the cambered plate 206, the absorption cell and the Hall element group 204 are fixed at
The inside of the housing 201；
The glass sock 202 is fixed in the outside of 201 body of shell；
Wherein, the stepper motor 203 drives the filter set 207 to do axial-movement around the stepper motor 203.
The lid of switching device of optical fiber provided in this embodiment is connected with housing by sealing ring, it is ensured that good
Leakproofness avoids the entrance of ambient atmos that possible enclosure interior is caused to corrode；Stepper motor drives filter set around motor
Axis rotates, and realizes the function of optical filter switching；Glass sock connection housing inside and outside, realizes communication function.
Filter set provided in this embodiment be located at lid housing between, can not only good airproof performance, stability is good, passes through
The rotation of stepper motor drives the switching of optical filter, after Hall element, can generate the signal of continuous-stable, signal is adopted
Collection is transmitted by glass sock.Such structure had not only avoided the interference during extraneous gas is used for, but also can accurately adopt
Collect signal, can be widely used in infrared gas analyzer.
Further, on the basis of above device embodiment, as shown in fig. 6, the filter set includes：Annular slab
2071, coupling sleeve 2072 and magnet 2073；
The coupling sleeve 2072 and the magnet 2073 are set on the annular slab 2071.
Further, on the basis of above device embodiment, the Hall element group includes：Hall element and fixation
Plate；
The Hall element is bonded in the fixed plate.
As shown in figure 5, switching device of optical fiber further includes：Filter set 207, optical filter 208 (comprising optical filter 1, filter
The optical filter of the different plated films of piece 2, optical filter 3,4 four kinds of optical filter) and jackscrew 209.
With reference to Fig. 4, filter set 207 is installed on stepper motor 203, optical filter 208 (comprising optical filter 1, optical filter 2,
The optical filter of the different plated films of optical filter 3,4 four kinds of optical filter) it is installed in filter set 207, the first jackscrew 209 is by filter set
207 and stepper motor 203 fix.
As shown in fig. 6, switching device of optical fiber further includes：Fixed block 210, the second jackscrew 211, lid 212,213 and of O-ring
Pin 214.
Wherein, lid 212 is connected and sealed with housing 201 by O-ring 213, and pin 214 is installed on housing 201, Gu
Determine block 212 to fix lid 212 and housing 201 by pin location fit jackscrew 211.
As shown in fig. 7, filter set includes：Annular slab 2071, coupling sleeve 2072 and magnet 2073.
Coupling sleeve 2072 is respectively arranged in magnet 2073 on annular slab 2071.
Position of the switching device of optical fiber in whole sensor element is as shown in figure 8, wherein, housing 201, glass sock
202nd, the position of stepper motor 203 and filter set 207 is distinguished as shown in Figure 4, Figure 5.
Specifically, the present embodiment provides the internal structure schematic diagram of film microphony multicomponent Modular gas analytical equipment such as
Shown in Fig. 9, wherein, cooling fin 215, power switch 216, gas circuit outlet 217, gas circuit air inlet 218, rear bottom plate 219, film microphony
Multi-component infrared gas analyzing module 220, noseplate 221, handle 222, flowmeter 223, touch screen 224, front panel 225 and electricity
Gas plate 226 cooperates with each other.
In switching device of optical fiber provided in this embodiment, filter set is set between cap 212 and housing 201,
Filter set 207 is driven to do axis rotation around stepper motor 203 by stepper motor 203, it can be according to the ingredient of tested gas
Different optical filter 208 (optical filter for including optical filter 1, optical filter 2, optical filter 3, the different plated films of 4 four kinds of optical filter) is selected,
Magnet 2073 wherein in filter set is when filter set does axis rotation, and by Hall element group, Hall element is used to adopt
Collect filter set turn signal.Wherein hall element sensor is double-electrode latch-type Hall effect position sensors, is a kind of double
Magnetic pole work magnetosensitive circuit, work under cylindrical magnet the present embodiment, operating temperature range at -40 DEG C~150 DEG C,
Current Voltage working range 3.8V~30V, load current ability reach as high as 40mA, and filter set is driven in stepper motor 203
When operating, the glass sock 202 being installed on housing 201 accepts the transmission of signal so that outside switching device of optical fiber
Signal plate can acquire pulse signal caused by its inside.Glass sock 202 also accepts the externally fed company of motor internal simultaneously
It connects.Cambered plate 206 is installed in housing 201 by deformable squeeze drying box 205, drying is wherein equipped in drying box 205
Agent, drier is alkali asbestos and/or hopcalite, for absorbing remaining carbon dioxide or carbon monoxide.Lid 212 and housing
201 are sealed by O-ring 213, fix lid 212 and housing 201 finally by fixed block 210, jackscrew 211, pin 214
Firmly.Such structure can not only good airproof performance, stability is good, can generate stable pulse signal, and avoid outside
Gas be used for during interference.
Further, on the basis of above device embodiment, described device further includes：Electric chemical formula analysis module；
The electric chemical formula analysis module includes：First base and electrochemical sensor.
By electric chemical formula analysis module, component analysis can be carried out to oxygen.
Further, on the basis of above device embodiment, described device further includes：Heat-conducted analysis module；
The heat-conducted analysis module includes：Second base, conductance cell and external insulation cover.
By heat-conducted analysis module, component analysis can be carried out to hydrogen.
Further, on the basis of above device embodiment, described device further includes：Magnetic mechanical analysis module；
The magnetic mechanical gas analysis module includes：Third pedestal, magnetic machinery module and external insulation cover.
By magnetic mechanical analysis module, accurate component analysis can be carried out to oxygen.
One film microphony Multi-component infrared gas analyzing module can be installed, one electric chemical formula analysis of installation also may be selected
Module or a heat-conducted analysis module.Film microphony multicomponent Modular gas analytical equipment provided in this embodiment at most may be used
Add the concentration analysis of an oxygen or hydrogen with the concentration for analyzing four kinds of infrared-gas components simultaneously.
Further, on the basis of above device embodiment, described device further includes：Motor drive module；
The motor drive module is connect with the motor, for being given birth to according to the switching frequency of the switching device of optical fiber
Sampling plate is sent into pulse signal, and by the pulse signal.
The motor drive module be mainly driving motor according to fixed frequency continuous work, while for two light sources it is anti-
Emitter provides power supply interface, while generates the pulse signal of identical frequency according to the speed for cutting mating plate and be transferred to sampling
Plate.
Further, on the basis of above device embodiment, described device further includes：Stepper motor drive module；
The stepper motor drive module runs for Driving Stepping Motor, to drive the switching of the optical filter.
By designing a fritter stepper motor driving circuit plate in stepper motor drive module, according to detection gas not
Together, Driving Stepping Motor drives optical filter switching, so as to fulfill the measurement of different component gas.
Further, on the basis of above device embodiment, described device further includes：Heat driven module；
The heat driven module is used to that heater to be controlled to heat sensor.
The heat driven module is realized using relay mode, main that heater is controlled to heat sensor, relay
Solid-state relay is used to improve the reliability of instrument.
Further, on the basis of above device embodiment, described device further includes：Touch serial ports screen display module；
The touch serial ports screen display module is used for display parameters setting, data, monitoring device state and automation control
Process.
The interface that serial ports screen display module is touched as human-computer interaction, arrange parameter, display data, monitoring device shape
State describes automation control process in forms such as curve, animations.
It is as shown in Figure 10 using the driving method of above-mentioned optical filter in the present embodiment：
S601, controller after the power is turned on, allow optical filter to be rotated clockwise from light source direction first, go to initial position stopping.
The initial position of optical filter is the position of Hall element and magnet consistency from top to bottom, and stepper motor rotates N1 step pitch from initial position
Angle reaches first optical filter position, needs to rotate N1+N2 step angle from initial position to the position of second optical filter,
Or rotate N2 step angle from the position of first optical filter；
S602 initializes stepper motor, continuously transmits pulse signal to stepper motor, stepper motor is allowed to rotate, Zhi Daojian
When measuring the output signal of Hall element has high level to low transition, stop sending pulse signal, stepper motor is allowed to stop
This position of optical filter, is defined as starting point by rotation, this is initialization n=0；
S603 continuously transmits pulse, and one pulse n of hair adds 1, until detecting that hall signal has high level to low electricity again
During flat saltus step, stop sending pulse signal；
The value of n is assigned to N, calculates N1, N2, N3, N4, N2=N3=N4=N/4, N1=N2/2 (rounding) by s604；
Next s605 rotates optical filter according to component number to be measured and component.
As component number to be measured be 3 when, and component to be measured 1, group 2 and component 3 correspond to before first, second and the 4th filter
During mating plate, after rotating optical filter to initial position, N1 pulse signal is sent to stepper motor, 10s acquisitions component 1 is waited to believe
Number and calculate concentration value, then stepper motor is given to send N2 pulse signal, 10s is waited to acquire and 2 signal of component and calculate concentration value,
Then N3+N4 pulse signal is sent to stepper motor, wait 10s acquisition 3 signals of component and calculates concentration value, completed so to be measured
The measurement of the period 1 of 3 components.When carrying out the measurement of second period, N4 pulse is sent to stepper motor, filter
Mating plate 1 corresponds to sense channel, waits for 10s acquisition 1 signals of component and calculates concentration value, is then completed according to the sequence of period 1
The continuous measurement of 3 components is so realized in the measurement of component 2 and component 3.
Film microphony multicomponent Modular gas analytical equipment provided in this embodiment increases detection oxygen or hydrogen
Function, shown using touch screen, easy to operate, stability is good, and accuracy is high, strong antijamming capability, suitable for sample gas and ring
The fields such as the severe process industry in border and environmental protection, scientific research use online.
Specifically, film microphony multicomponent Modular gas analytical equipment includes film microphony multicomponent infrared-gas point
Module, electric chemical formula analysis module, heat-conducted analysis module, magnetic mechanical analysis module, gas circuit, circuit board, motor is analysed to drive
Dynamic model block, heat driven module, bottom plate, touches serial ports screen display module at stepper motor drive module；Wherein film microphony is multigroup
Divide infrared-gas analysis module, including detector, gas chamber, optical filter, light source；Wherein electric chemical formula analysis module include pedestal and
Electrochemical sensor；Heat-conducted analysis module includes pedestal, conductance cell and outer protection cover.
The apparatus embodiments described above are merely exemplary, wherein the unit illustrated as separating component can
To be or may not be physically separate, the component shown as unit may or may not be physics list
Member, you can be located at a place or can also be distributed in multiple network element.It can be selected according to the actual needs
In some or all of module realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Labour in the case of, you can to understand and implement.
It should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although reference
The present invention is described in detail in previous embodiment, it will be understood by those of ordinary skill in the art that：It still can be right
Technical solution recorded in foregoing embodiments modifies or carries out equivalent replacement to which part technical characteristic；And this
A little modifications are replaced, the spirit and model of various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of film microphony multicomponent Modular gas analytical equipment, which is characterized in that including：The double light of the double light sources of film microphony
Road two-component infrared analysis module, four component infrared analysis module of film microphony single light source monochromatic light road, electrochemical gas
Analysis module, heat-conducted gas analysis module and magnetic mechanical gas analysis module；
The double light source double light path two-component infrared analysis modules of the film microphony include an infrared light supply generating means, two
Gas chamber and two film microphony detectors include two infrared light supply reflectors in one infrared light supply generating means；
The four component infrared analysis module of film microphony single light source monochromatic light road include an infrared light supply generating means, one
It is infrared that one of them is used only in one infrared light supply generating means for gas chamber, an optical filter and a film microphony detector
Light source reflector；
By the switching of optical filter in the optical filter, the film microphony detector is enable to measure the group of gas in each gas chamber
Point；
The electrochemical gas analysis module includes pedestal, electrochemical sensor and the gas nozzle for being installed on pedestal, for analyzing
The concentration of oxygen gas；
The heat-conducted gas analysis module includes pedestal, conductance cell and conductance cell external insulation cover, for analyzing hydrogen gas
Concentration；
The magnetic mechanical gas analysis module includes pedestal, magnetic machinery module and external insulation cover, for Accurate Analysis
The concentration of oxygen gas.
2. the apparatus according to claim 1, which is characterized in that the film microphony detector includes tandem-type thin film microphony
Capacitor-type detector, the series connection type thin film micro-phonic condensator type detector include housing, connector sleeve, connect with connector sleeve and
It is set in detection chamber component, the signal terminal positioned at housing bottom and the vacuum manifold mounted on housing sidewall of enclosure interior；
The detection chamber component includes two housings；
The connector sleeve includes the flange for external connection, the optical filter being installed in connector sleeve, is installed on optical filter side
Optics balance hole, the annular seal groove of connector sleeve lower part and ring packing notch.
3. the apparatus according to claim 1, which is characterized in that the infrared light supply generating means includes：Upper shell, lower casing
Body, upper magnetic support, cuts mating plate, lower magnetic support and reflector at motor；
The upper shell is connect with lower housing, and the upper magnetic support is set on the lateral wall of the upper shell；
The lower magnetic support corresponds to the upper magnetic support setting, and between the upper shell and lower housing；
The mating plate of cutting is set on the lower magnetic support.
4. the apparatus according to claim 1, which is characterized in that the optical filter includes switching device of optical fiber；
The switching device of optical fiber includes：Lid, housing, stepper motor, filter set, optical filter, cambered plate, absorption cell, glass
Glass covers and Hall element group；
The lid is connect with housing；
The filter set is connect with the stepper motor；
The optical filter is movably arranged in the filter set, according to the component of tested gas, determines that target optical filter is fixed on
In the filter set；
The stepper motor, the cambered plate, the absorption cell and the Hall element group are fixed at the interior of the housing
Portion；
The glass sock is fixed in the outside of the housing；
Wherein, the stepper motor drives the filter set to do axial-movement around the motor.
5. the apparatus according to claim 1, which is characterized in that described device further includes：Electric chemical formula analysis module；
The electric chemical formula analysis module includes：First base and electrochemical sensor.
6. the apparatus according to claim 1, which is characterized in that described device further includes：Heat-conducted analysis module；
The heat-conducted analysis module includes：Second base, conductance cell and external insulation cover.
7. the apparatus of claim 2, which is characterized in that the filter set includes：Annular slab, coupling sleeve and magnetic
Iron；
The coupling sleeve and the magnet are set on the annular slab.
8. the apparatus of claim 2, which is characterized in that the Hall element group includes：Hall element and fixed plate；
The Hall element is bonded in the fixed plate.
9. the apparatus of claim 2, which is characterized in that described device further includes：Stepper motor drive module；
The stepper motor drive module is connect with the stepper motor, for the switching frequency according to the switching device of optical fiber
Rate generates pulse signal, and the pulse signal is sent to sampling plate.
10. a kind of control method to optical filter described in claim 1, which is characterized in that the method comprising the steps of：
S601, controller after the power is turned on, allow optical filter to be rotated clockwise from light source direction first, go to initial position stopping, filtering
The initial position of device is the position of Hall element and magnet consistency from top to bottom, and stepper motor rotates N1 step angle from initial position,
Reach first optical filter position, to the position of second optical filter need from initial position rotate N1+N2 step angle or
N2 step angle is rotated from the position of first optical filter；
S602 initializes stepper motor, continuously transmits pulse signal to stepper motor, stepper motor is allowed to rotate, until detecting
When the output signal of Hall element has high level to low transition, stop sending pulse signal, stepper motor allowed to stop operating,
This position of optical filter is defined as starting point, this is initialization n=0；
S603 continuously transmits pulse, and one pulse n of hair adds 1, until detecting that hall signal has high level to be jumped to low level again
During change, stop sending pulse signal；
The value of n is assigned to N, calculates N1, N2, N3, N4, N2=N3=N4=N/4, N1=N2/2 (rounding) by s604；
Next s605 rotates optical filter according to component number to be measured and component.
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| CN201711407919.2A CN108181255A (en) | 2017-12-22 | 2017-12-22 | A kind of film microphony multicomponent Modular gas analytical equipment |
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| CN201711407919.2A CN108181255A (en) | 2017-12-22 | 2017-12-22 | A kind of film microphony multicomponent Modular gas analytical equipment |
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| CN109342346A (en) * | 2018-11-05 | 2019-02-15 | 安徽建筑大学 | Visual electric fire multistage automatic alarm device |
| CN109342347A (en) * | 2018-11-05 | 2019-02-15 | 安徽建筑大学 | Multi-mode gas analysis device and analysis method |
| CN111735588A (en) * | 2020-08-10 | 2020-10-02 | 罗浮阀门集团有限公司 | Delivery test device and method for breather valve |
| CN112834562A (en) * | 2021-01-04 | 2021-05-25 | 吉林大学 | Device and method for detecting helium concentration in heat-conducting mixed gas |
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